I am trying to follow the below instuction to send the FACEBOOK MESSENGER messages using CHAT API. I am NOT getting the syntax of JSON request.
Send Triggered Messages Via the Chat Messaging API https://developer.salesforce.com/docs/atlas.en-us.mc-apis.meta/mc-apis/routes.htm?search_text=ott
Note: I was able to register my Facebook page SUCCESSFULLY as per "https://developer.salesforce.com/docs/atlas.en-us.noversion.mc-apis.meta/mc-apis/routes.htm#!"
I did some R & D but, did NOT found any resource on the end point POST /ott/v1/send